[1].[J].Asian Herpetological Research,2014,5(4):255-262.[doi:10.3724/SP.J.1245.2014.00255]
 Vhon Oliver S. GARCIA*,Rey Donne S. PAPA,Jonathan Carlo A. BRIONES,et al.Food Habits and Distribution of the Lake Taal Sea Snake (Hydrophis semperi Garman 1881) and the Sympatric Little File Snake (Acrochordus granulatus Schneider 1799) in Lake Taal, Philippines[J].Asian Herpetological Research(AHR),2014,5(4):255-262.[doi:10.3724/SP.J.1245.2014.00255]
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

卷:
5
期数:
2014年4期
页码:
255-262
栏目:
Original Article
出版日期:
2014-12-25

文章信息/Info

Title:
Food Habits and Distribution of the Lake Taal Sea Snake (Hydrophis semperi Garman 1881) and the Sympatric Little File Snake (Acrochordus granulatus Schneider 1799) in Lake Taal, Philippines
文章编号:
AHR-2014-0043
Author(s):
Vhon Oliver S. GARCIA1* Rey Donne S. PAPA123 Jonathan Carlo A. BRIONES13 Norman MENDOZA4 Noboru OKUDA5 and Arvin C.
1 The Graduate School, University of Santo Tomas, Manila, Philippines
2 Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
3 Department of Biological Sciences, University of Santo Tomas, Manila, Philippines
4 Department of Science and Technology, Philippine Nuclear Research Institute, Philippines
5 Center for Ecological Research, Kyoto University, Japan
6 Herpetology Section, Zoology Division, National Museum of the Philippines, Philippines
Keywords:
freshwater diet feeding Hydrophis semperi Hydrophiidae
DOI:
10.3724/SP.J.1245.2014.00255
Abstract:
Our knowledge about the food habits of sea snakes and how it is associated with their distribution has seen much development through its description across a number of species available through published literature except for the key threatened species such as Hydrophis semperi. This paper aims to describe the food habits of H. semperi through gut content and stable isotope analyses. We also compared data with the Little File Snake, Acrochordus granulatus, sympatric with H. semperi. Recorded captures of H. semperi suggest that the sea snake tends to occur in the littoral zones and the shallower portions of the limnetic zone. Gut content analysis of H. semperi have shown that gobies and eels are primary prey items. Halfbeaks (Family Hemiramphidae) were recorded as one of the Lake Taal Sea Snake’s prey items which is considered as a new prey record for sea snakes. These extracted gut contents are confirmed to be the temporal food preference of H. semperi given our detected stable isotope signatures. It appears that A. granulatus and H. semperi share common prey items suggesting possible diet overlap and resource competition. This study reports the first account of the endemic Lake Taal Sea Snake’s distribution and food habits which poses implications towards its conservation as it occurs in a restricted ecosystem that has undergone considerable habitat alteration.

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更新日期/Last Update: 2016-01-25